Color chart



April 8, 1930. Y J. E. NORBERG 1,753,619

COLOR CHART Filed Feb. 1, 1928 abhwmq v Patented Apr. 8, 1930 NET a rare JOHN E. NOR-BERG, OF SAN FRANCISCO, CALIFORNIA COLOR CHART Application filed February 1, 19281 SeriaINo. 251,052.

This invention relates to-a color chart, and its object is to provide a color chart in three dimensions which will be capable of showing variations in color from any one of a series of 5 difierent intermediate-hues toward white or black or grey in three dillerent directions with respect to any or" the hues shown on the chart, and in opposite directions towards various other intermediate hues around the 10 chart.

In the present instance a central core is used which may be graded in tonefrom black to white and on which a plurality of leaves are detachably hinged to show varying de grees of color. The chart is so arranged as to represent three properties of color, hue, tone, and neutrality, also arranged as to brin each individual variation of (30101 next in s quence to any or all of the three properties, with the complementary hues on the opposite side of the central core.

The number of leaves used, and the number of color variations may be indefinite although in the present instance only six movable leaves are shown in Figures 1 and 2. 7

It will also be seen that the exact mechanical construction may be varied at will within the purview of the invention and instead of the hinged leaves an ordinary book may take 30 the place of the leaves hinged on the central core.

In the present instance there are a series of veins arranged radially around a central core, each web or vein having graduations of hue in degree of tone from top to bottom, and neutrality of tone from edge to center adjacent webs or veins carrying hues which approach each other in predominant wave lengths, and each vein having identical hues on each side thereof.

Other objects of the invention will be apparent as the description proceeds.

An embodiment of the invention is shown- 5 chart stands carrying six leaves,-

Figure 2 is a perspective viewot the color stand shown 1n Flgure 1, and Figure 3 1s a planv view rof an open book carryingleaves:

substantially like the coloring of Figures 1 and 2. Y

The numeral 1 indicates a post extending from the base 2, said post carrying a core3 with a flange i at the bottom,-and a spring flange 5 at the upper end, the spring flange 5v being stiff enough to hold the pivot pins of the leaves in place without preventing them from being dislodged except tore traordinary circumstances when it is desired to remove the leaves from the stand.

In the present instance the leaves are indicated at 6 to 11 inclusive, and they may be placed in position or-easily detached therefrom by lifting on the portion of the spring 5,.extending between the notches in said plate, it being necessary only to disengage thesmall pin 12 from the plate 5 in order to make it possible to detach the cards from the stand or to attach others.

If it is desired to use the color card in the form ofa book, the leaves20 may be secured to'the back 21, but in event they will carry the arrangement ofthe colors the same" 1 as the leaves shown in Figure 2. A

The arrangementof the colors as indicated in Figure 1, in which the yellow will befound opposite the violet, the red opposite the blue, and-the crimson opposite the green, while vertically there will be'a pure hue near the middle or" each card at the. outside, andjthcse hues will grade by easy steps to whiteatthe top and black at the bottom, and similarly the hues at the outside of the plates will grade towardvarious neutral greys disposed on the central post.

The number of leaves used in the book, or in the stand is purely arbitrary, and will depend entirely upon the desires of the'user.

Assuming a, much larger number of color cards aroused, it will be seen that on the outside edges of the cards there will be variations in color both around the stand as Well as to ward the central post. It desiredto obtain the efiect of a wider variation of hues when placed in juxtaposition any of the leaves can be removed and be comparedwith the neat one. For example, the red with the violet instead of comparing the red with the crimson.

It will be seen from Figures 1 and 2 that it is possible to remove one of the plates by simply lifting up on the spring holder 5 enough to release the pivots 12 that a comparison could then be made between-the red and violet, or between the red if that is desired, or any other shades.

In the form of theinvention shown in Figure 3, the leaves are arranged on the core21, and the leaves are divided up the same as is illustrated in Figure '2 with the color arrangement being the same, and as in the other figure.

Examination of Figure 1 will show that beginning in the leaves from 6 to 11 carry the same color onboth sides as follows: 6 is yellow, 7 is green,

8 is blue, 9 is violet, 10 is crimson and 11 is red, while an examination of Figure 2 will show that the core is divided up vertically and carries white atthe top,various gradae tions from white to black at the bottom, the last section being black, the higher colors are on the outside of the cards and proceed from a pure hue at the center of the leaf 11, to a white at the top and blaokatthe bottom, various other degrees of hue appearing in the other spaces, to a neutral g'reyat the core.

The leaves are arranged with complementary colors opposite each other, and withthe next adjacent color of the spectrum in the next adjacent leaves.

Having thus described my invention, what I desire tosecure by Letters Patent'of the United States is as follows, but modifications may be made in carrying out the inventionas shown in the drawings and in the above particularly described form thereof, within the purview of the annexed claims.

I claim:

1. A color chart comprising a central core carrying gradations from white to black along its length, and a plurality of leaves secured thereto, each leaf carrying different hue gradations from a position on one edge of the leaf toward thethree other edges.

2. A color chart comprising a central core carrying color gradations from white to black, a plurality of leaves hinged thereto, each leaf carrying different color gradations from the given color toward the other three-edges of the leaf, the several leaves of the chart being arranged'with complementary colors opposite each other, and 'with'the'next adjacent color of the spectrum on 'the next adjacent leaves.

In testimony whereof I have hereunto set my hand this 26th day of January, A D. 1928.

JOHN E. NORBEBG.

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